/*
 * Copyright 2002-2006 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.paoding.rose;


/**
 * Class that exposes the Spring version. Fetches the
 * "Implementation-Version" manifest attribute from the jar file.
 * 
 * <p>
 * Note that some ClassLoaders do not expose the package metadata, hence
 * this class might not be able to determine the Spring version in all
 * environments. Consider using a reflection-based check instead: For
 * example, checking for the presence of a specific Spring 2.0 method that
 * you intend to call.
 * 
 * @author Juergen Hoeller
 * @since 1.1
 */
public class RoseVersion {

    /**
     * Return the full version string of the present Spring codebase, or
     * <code>null</code> if it cannot be determined.
     * 
     * @see java.lang.Package#getImplementationVersion()
     */
    public static String getVersion() {
        Package pkg = RoseVersion.class.getPackage();
        return (pkg != null ? pkg.getImplementationVersion() : null);
    }

}
